That bolded part is precisely where I think we disagree. I don't accept that Moondancer had a right to force her feelings onto Twilight, at least not without a more concrete reason to expect Twilight would be at her party. Again, I know what the writers wanted to do with the episode, I just don't think they did it write (hehe). Had they shown a flashback of Moondancer actually asking Twilight and getting a "yes" answer, thus breaking a promise, I would have absolutely no problem with the central emotional conflict, or with your statement.
I understand why other people like this episode, I truly do, but the writing / logic is flawed. Anyway, we risk derailing the thread, so I'll just leave you with links to the blog posts where I discuss Amending Fences and how it could have been improved, and we can continue with the discussion in PM, if you like.
Back on topic, things I hate everyone seems to love: avacado. Seriously, it's this atomic-sludgey green mush; how can that be appetizing, I ask you?